1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                       G N A T . T I M E _ S T A M P                      --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 2008-2018, Free Software Foundation, Inc.        --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32with Interfaces.C; use Interfaces.C;
33
34package body GNAT.Time_Stamp is
35
36   subtype time_stamp is char_array (0 .. 22);
37   type time_stamp_ptr is access all time_stamp;
38   --  The desired ISO 8601 string format has exactly 22 characters. We add
39   --  one additional character for '\0'. The indexing starts from zero to
40   --  accommodate the C layout.
41
42   procedure gnat_current_time_string (Value : time_stamp_ptr);
43   pragma Import (C, gnat_current_time_string, "__gnat_current_time_string");
44
45   ------------------
46   -- Current_Time --
47   ------------------
48
49   function Current_Time return String is
50      Result : aliased time_stamp;
51
52   begin
53      gnat_current_time_string (Result'Unchecked_Access);
54      Result (22) := nul;
55
56      return To_Ada (Result);
57   end Current_Time;
58
59end GNAT.Time_Stamp;
60